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Application:
It is used in metallurgy, medicine, leather, wood preservative, textile, plating, ferment, fertilizer.
Standard (GB535-1995)
Index | Premium Grade |
Appearance | white crystal without any impurity visible to the naked eye |
Nitrogen(N) content (based on dry basis) % | ≥20.5 |
Moisture % | ≤0.5 |
Free Aicd (as H2SO4) % | ≤0.20 |
Features:
1) Ammonium sulfate (IUPAC-recommended spelling; also ammonium sulphate in British English), (NH4)2SO4, is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer. It contains 21% nitrogen as ammonium cations, and 24% sulfur as sulfate anions.
Item | Technical Data |
Appearance | White crystal |
N | 21.0%min |
Water | 0.2%max |
Free acid | 0.03%max |
Fe | 0.007%max |
As | 0.00005%max |
Heavy metal(Pb) | 0.005%max |
Water insolubles | 0.01%max |
Note: When ammonium sulphate is used in agriculture,it is not necessary to check the content of Fe,As,heavy metal and water insolubles. | |
2)Specifications:
Molecular formula | (NH4)2SO4 |
Molecular weight | 132.13 |
Element Composition | If pure substance, nitrogen content is 21.21%, sulfer content is 24.26%. |
Density | 1.769g/cm3 |
Decomposition temperature | 235 degrees centigrade |
CAS No. | 7783-20-2 |
H.S.code (customs code) | 31022100 |
Color | Pure chemicals of ammonium sulfate are colorless rhombic crystals. Industrial products are white color, light grey or light yellow or yellowish-brown color crystal because of different impurities bearing. |
Physicalproperty | easy to dissolve in water and can not dissolve in alcohol, acetone, ammonia; |
Ammonium Sulphate (NH4)2SO4